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    <title>Document</title>
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    <div class="box">
        <table>
            <thead>
                <tr>
                    <th colspan="2">日期</th>
                    <th colspan="2">天气现象</th>
                    <th >气温</th>
                    <th>风向</th>
                    <th>风力</th>
                </tr>
                <tr>
                    <td rowspan="2">22日星期5</td>
                    <td>白天</td>
                    <td><img src="./images/白天.gif"></td>
                    <td>晴间多云</td>
                    <td class="red">高温7℃</td>
                    <td>无持续风向</td>
                    <td>微向</td>
                </tr>
                <tr>
                    <td>夜间</td>
                    <td><img src="./images/夜间.gif"></td>
                    <td>晴</td>
                    <td>低温-4℃</td>
                    <td>无持续风向</td>
                    <td>微风</td>

                </tr>
            </thead>
            <tbody>
                <tr class="kongge"></tr>
                <tr>
                    <td rowspan="2" class="red">23日星期六</td>
                    <td>白天</td>
                    <td><img src="./images/白天.gif"></td>
                    <td>晴</td>
                    <td class="red">高温9℃</td>
                    <td>无持续风向</td>
                    <td>微风</td>
                </tr>
                <tr>
                    <td>夜间</td>
                    <td><img src="./images/阴.gif"> </td>
                    <td>阴</td>
                    <td>低温-2℃</td>
                    <td>无持续风向</td>
                    <td>微风</td>
                </tr>
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